A modification in the flotation process of a calcareous–siliceous phosphorite that might improve the process economics

Boulos, T. R.; Yehia, Ahmed; Ibrahim, Suzan S.; Yassin, Khaled E.

doi:10.1016/j.mineng.2014.07.017

Cited by 27 publications

(8 citation statements)

References 9 publications

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“…The direct-reverse flotation process, in which the siliceous minerals are discharged by direct flotation while the calcareous minerals are discharged by reverse flotation, is a popular approach to separation [19,20] but one that comes with several drawbacks, including high reagent consumption, high flotation temperature, and severe environmental pollution. The gravity-flotation combination beneficiation of mid-low grade collophane has been proven effective [21,22], but the high acid consumption of the reverse flotation stage remains problematic [23].…”

Section: Introductionmentioning

confidence: 99%

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

et al. 2017

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Phosphate ore is a valuable strategic resource. Most phosphate ore in China is collophane. Utilization of mid-low grade collophane is necessary to maintain social sustainable development. The gravity-flotation combination separation process can be utilized to separate mid-low grade collophane, but the process consumes a large quantity of acid in the reverse stage. Sodium dodecyl sulfate (SDS) was used as a dolomite collector in this study to reduce the acid consumption of collophane flotation. SDS effectively removed dolomite from the gravity concentrate when no other reagents were present. Flotation test results showed that, compared to the conventional gravity-flotation process, the proposed SDS-based process reduced phosphoric acid dosage from 6.1 kg/t to 3.9 kg/t with similar separation results. The SDS action mechanisms on dolomite were further investigated by zeta potential analysis, single mineral flotation tests, infrared spectrum detection, and theoretical analysis. The results indicate that the SDS adsorption on dolomite is mainly physical adsorption, and that favorable separation effects between collophane and dolomite may be attributed to physical adsorption and entrainment. In addition, it also indicates that the physical adsorption can be utilized to remove dolomite from phosphate on account of zeta potential differences when the separate feed is coarse.

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Section: Introductionmentioning

confidence: 99%

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

et al. 2017

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“…The recovery initially increased to a maximum value at a sulfuric acid dosage of 15 kg/t, then decreased gradually to a minimum value at a dosage of 21 kg/t, before starting to subsequently increase. It was reported that the desirable pH for the depression of the phosphate minerals was 4.5-5.5 [5,6,11], but the pH of the pulp in the function of sulfuric acid at the range of 15-21 kg/t was below 4. Therefore, it was not sufficient to depress the phosphate minerals under this condition.…”

Section: Effect Of Sulfuric Acid Dosagementioning

confidence: 99%

“…Fatty acids are the main traditional anionic collectors used for the flotation of non-sulphide ores [11]. However, their application suffers from sensitivity to slimes and ions, an increased collector price, relatively high consumption due to their very low solubility in water, and a high temperature requirement [12].…”

Section: Introductionmentioning

confidence: 99%

Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector

et al. 2017

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Abstract:The mid-low grade sedimentary phosphate ore, abundant in silicate and carbonate gangue minerals, exhibits a poor processability. It is conventionally enriched using high temperature flotation to remove silicate gangues with fatty acid as a collector. Cottonseed oil has been proved to be an efficient collector for achieving ambient temperature flotation of the sedimentary phosphate ore used in this study. Flotation kinetics was investigated to ascertain the excellent collecting performance of cottonseed oil, as compared with oleic acid, and the phosphate flotation fitted well with the first-order flotation model. Based on the analysis of flotation reagent effect on the direct flotation process using the response surface methodology (RSM), a closed circuit of direct-reverse flotation for stepwise removing silicate and carbonate gangues from the sedimentary phosphate ore was established. Consequently, a required high quality of phosphate concentrate containing 30.16% P 2 O 5 was obtained, with a recovery of 90.90%. Scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) of the flotation products confirmed that the majority of silicate and carbonate gangues were effectively removed from the concentrate products.

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“…Although many measures were investigated for beneficiating phosphate minerals, flotation is energy saving and low cost in alumina production. However, the carbonated sedimentary phosphate ores are extremely difficult to concentrate via flotation due to the similar physicochemical surfaces properties of the main constituents, carbonate and phosphate minerals [2]. The processing of carbonated sedimentary phosphate still represents a continuous industrial worldwide challenge.…”

Section: Introductionmentioning

confidence: 99%

Novel Sulfo Fatty Acid for Flotation Separation of Carbonates Against Phosphate Rocks

Liang¹,

Yang²,

Pan³

2017

Topics in Civil, Environmental &Amp; Building Engineering (TICEBE)

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We designed and synthesized a novel sulfo fatty acid (SSA) which demonstrated high selectivity and strong collecting capacity for the beneficiation of phosphate ore by reverse flotation. The SSA collector was investigated to float single minerals and real phosphate ore. The collecting performance on minerals was interpreted by means of adsorption amount measurement, zeta potential measurement, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analysis. The appropriate pH value for the single minerals flotation was close to pH 5 at which dolomite presents quite good floatability while apatite exhibit very poor floatability. The performance of SSA and oleic acid used for the real phosphate ore flotation was compared, and the critical factors of phosphate ore flotation were investigated. It was found that the novel SSA achieved superior results, causing dolomite adsorbing reagent in larger amount than apatite.

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A modification in the flotation process of a calcareous–siliceous phosphorite that might improve the process economics

Cited by 27 publications

References 9 publications

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector

Novel Sulfo Fatty Acid for Flotation Separation of Carbonates Against Phosphate Rocks

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